<template>
  <table v-if="treeData.earLabel">
    <tr>
      <td
        :colspan="Array.isArray(treeData.children) ? treeData.children.length * 2 : 1"
        :class="{parentLevel: Array.isArray(treeData.children) && treeData.children.length, extend: Array.isArray(treeData.children) && treeData.children.length && treeData.extend}"
      >
        <div
          :class="{node: true, hasMate: treeData.mate}"
          @click="() => {$emit('click-node', treeData)}"
        >
          <div
            class="person"
            :class="Array.isArray(treeData.class) ? treeData.class : []"
          >
            <!-- <div class="avat">
              <img :src="treeData.image_url" />
            </div>-->
            <div
              v-if="treeData.zIndex!==1"
              class="name"
            >{{ treeData.Fname || '无' }}</div>
            <div class="name">耳标： {{ treeData.earLabel || '无' }}</div>
            <div class="name">电子耳标： {{ treeData.eleEarLabel || '无' }}</div>
          </div>
          <template v-if="Array.isArray(treeData.mate) && treeData.mate.length">
            <div
              v-for="(mate, mateIndex) in treeData.mate"
              :key="treeData.name+mateIndex"
              class="person"
              :class="Array.isArray(mate.class) ? mate.class : []"
              @click="$emit('click-node', mate)"
            >
              <div class="avat">
                <img :src="mate.image_url" />
              </div>
              <div class="name">{{ mate.name }}</div>
            </div>
          </template>
        </div>
        <div
          v-if="Array.isArray(treeData.children) && treeData.children.length"
          class="extend_handle"
          @click="toggleExtend(treeData)"
        ></div>
      </td>
    </tr>
    <tr
      v-if="Array.isArray(treeData.children) && treeData.children.length && treeData.extend"
    >
      <td
        v-for="(children, index) in treeData.children"
        :key="index"
        colspan="2"
        class="childLevel"
      >
        <TreeChart :json="children" @click-node="$emit('click-node', $event)" />
      </td>
    </tr>
  </table>
</template>

<script>
export default {
  name: "TreeChart",
  // eslint-disable-next-line vue/require-prop-types
  props: ["json"],
  data() {
    return {
      treeData: {}
    };
  },
  watch: {
    json: {
      handler: function(Props) {
        // console.log(Props);
        let extendKey = function(jsonData) {
          jsonData.extend =
            jsonData.extend === void 0 ? true : !!jsonData.extend;
          if (Array.isArray(jsonData.children)) {
            jsonData.children.forEach(c => {
              extendKey(c);
              // console.log(c.Fname);
              // console.log(c.zIndex);
            });
          }
          return jsonData;
        };
        if (Props) {
          this.treeData = extendKey(Props);
        }
      },
      immediate: true
    }
  },
  methods: {
    toggleExtend: function(treeData) {
      treeData.extend = !treeData.extend;
      this.$forceUpdate();
    }
  }
};
</script>

<style scoped lang="scss">
table {
  border-collapse: separate !important;
  border-spacing: 0 !important;
}
td {
  position: relative;
  vertical-align: top;
  padding: 0 0 50px 0;
  text-align: center;
}

.extend_handle {
  position: absolute;
  left: 50%;
  bottom: 30px;
  width: 10px;
  height: 10px;
  padding: 10px;
  transform: translate3d(-15px, 0, 0);
  cursor: pointer;
}
.extend_handle:before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  border: 2px solid;
  border-color: #ccc #ccc transparent transparent;
  transform: rotateZ(135deg);
  transform-origin: 50% 50% 0;
  transition: transform ease 300ms;
}
.extend_handle:hover:before {
  border-color: #333 #333 transparent transparent;
}
.extend .extend_handle:before {
  transform: rotateZ(-45deg);
}

.extend::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 15px;
  height: 15px;
  border-left: 2px solid #ccc;
  transform: translate3d(-1px, 0, 0);
}
.childLevel::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 100%;
  height: 15px;
  border-left: 2px solid #ccc;
  transform: translate3d(-1px, 0, 0);
}
.childLevel::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -15px;
  border-top: 2px solid #ccc;
}
.childLevel:first-child:before,
.childLevel:last-child:before {
  display: none;
}
.childLevel:first-child:after {
  left: 50%;
  height: 15px;
  border: 2px solid;
  border-color: #ccc transparent transparent #ccc;
  border-radius: 6px 0 0 0;
  transform: translate3d(1px, 0, 0);
}
.childLevel:last-child:after {
  right: 50%;
  height: 15px;
  border: 2px solid;
  border-color: #ccc #ccc transparent transparent;
  border-radius: 0 6px 0 0;
  transform: translate3d(-1px, 0, 0);
}
.childLevel:first-child.childLevel:last-child::after {
  left: auto;
  border-radius: 0;
  border-color: transparent #ccc transparent transparent;
  transform: translate3d(1px, 0, 0);
}

.node {
  position: relative;
  display: inline-block;
  margin: 0 1em;
  box-sizing: border-box;
  text-align: center;
}
.node .person {
  position: relative;
  display: inline-block;
  z-index: 2;
  /* width: 6em; */
  width: 100%;
  /* overflow: hidden; */
  display: flex;
  flex-wrap: nowrap;
  flex-direction: column;
}
.node .person .avat {
  display: block;
  width: 4em;
  height: 4em;
  margin: auto;
  overflow: hidden;
  background: #fff;
  border: 1px solid #ccc;
  box-sizing: border-box;
}
.node .person .avat img {
  width: 100%;
  height: 100%;
}
.node .person .name {
  height: 2em;
  line-height: 1em;
  /* overflow: hidden; */
  width: 100%;
  white-space: nowrap;
}
.node.hasMate::after {
  content: "";
  position: absolute;
  left: 2em;
  right: 2em;
  top: 2em;
  border-top: 2px solid #ccc;
  z-index: 1;
}
/* 横板 */
.landscape {
  transform: translate(-100%, 0) rotate(-90deg);
  transform-origin: 100% 0;
}
.landscape .node {
  text-align: left;
  height: 18em;
  width: 6em;
  box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.3);
  border-radius: 5px;
  &:hover {
    box-shadow: 0 0 10px 1px rgba(40, 209, 232, 0.6);
  }
}
.landscape .person {
  position: relative;
  transform: rotate(90deg);
  /* padding-left: 4.5em; */
  /* height: 4em; */
  top: 2.12em;
  left: 0em;
}
.landscape .person .avat {
  position: absolute;
  left: 0;
}
.landscape .person .name {
  height: 1em;
  line-height: 1em;
  margin-bottom: 5px;
  /* font-size: ; */
  font-weight: 600;
  color: #000;
}
.landscape .hasMate {
  position: relative;
}
.landscape .hasMate .person {
  position: absolute;
}
.landscape .hasMate .person:first-child {
  left: auto;
  right: -4em;
}
.landscape .hasMate .person:last-child {
  left: -4em;
  margin-left: 0;
}
</style>
